Latitudinal changes in submarine channel-levee system evolution, architecture and flow processes

Models of the sedimentary architecture submarine channel-levee systems and their formative flow processes are predominantly based on studies from low latitude settings. Here, we integrate high-resolution seismic reflection, bathymetry GLORIA side scan data to document interpret a series ultra-high (72–76°N) that feed lobe complexes off Greenland margin. We demonstrate channel-fills dominated by vertical or near-vertical sediment accumulation, reflecting lack of, very limited nature lateral migration over time. All show significant cross-sectional asymmetry, peak sinuosity 1.38, gradient slope (∼0.3°). The bounding external levees thick (∼200 m) wide relative systems. Comparison these with other examples reveals characteristics appear be common in high latitudes, suggesting latitudinal controls differences between high- low-latitude is likely due interplay physical forcing (i.e., Coriolis force) climatic factors control calibre type, both which latitudinally dependent. Several mechanisms for supressing initial phase subsequent asymmetrical development proposed, including:i) rapid channel aggradation, (ii) causing preferred deposition right-hand channel, iii) variance properties, traction- suspension-dominated flows deposited opposing sides channel. argue location larger may result dominance stacking channels, construction large levees, planform.